(1)A converging lens of refractive index 1.52 is placed in a solution of carbon disulphide (n=1.6). Describe its nature in new medium.
(2) A current of 2A is obtained when a resistance 5 ohm is connected across a cell and a current of 3A is obtained when a resistance of 3 ohm is connected. Calculate internal resistance and emf of cell?
(3) An illuminated object is kept at a distance of 80cm from a wall. What is the focal length and nature of the lens that can produce 3 times magnified image of the object on the wall? Will the image be erect or inverted?
Answers
Answered by
1
sorry i donot now about the answer if anyone tell you then tell me also .
Similar questions